partial void DeleteDAYPHONG(DAYPHONG instance);
 partial void InsertDAYPHONG(DAYPHONG instance);
 partial void UpdateDAYPHONG(DAYPHONG instance);
 private void detach_DAYPHONGs(DAYPHONG entity)
 {
     this.SendPropertyChanging();
     entity.CANBO_QL = null;
 }